Bruce Dern gives the performance of his life. He is wonderful. He maintains the quality of tuning in and out of reality throughout the film. Typical of someone with dementia, you are never really sure if he's there or not. There is a moment in the film when he drives and you can just see him glow and come alive.This is not a film for everyone because it moves slow, but true movie buffs will love it. Filmed in black and white and bleak (if that were a color) it's a son that takes his father on a road tripIt's quietly poignant, with a lot of very funny moments in it. When the mother is in the scene, she steals every one.The cousins are a riot and the family members are a cast of characters. This is the sort of film that you leave but doesn't leave you.